CVE-2026-26310
HIGH WAF: Medium
CVSS 7.5
Published: 2026-03-10
CWE-20
Envoy is a high-performance edge/middle/service proxy. Prior to 1.37.1, 1.36.5, 1.35.8, and 1.34.13, calling Utility::getAddressWithPort with a scoped IPv6 addresses causes a crash. This utility is called in the data plane from the original_src filter and the dns filter. This vulnerability is fixed in 1.37.1, 1.36.5, 1.35.8, and 1.34.13.
WAF Coverage Analysis
Improper Input Validation
Medium WAF Coverage
OWASP: A03:2021 Injection
920xxx - Protocol Enforcement 941xxx - XSS / XXE 942xxx - SQL Injection
Affected Software
| Vendor | Product | Version |
|---|---|---|
| envoyproxy | envoy | up to 1.34.13 |
| envoyproxy | envoy | 1.35.0 - 1.35.8 |
| envoyproxy | envoy | 1.36.0 - 1.36.5 |
| envoyproxy | envoy | 1.37.0 |
References
- github.com (Exploit, Vendor Advisory)